Speaking to TV Globo on Monday, he said: "I cried a lot, when I received the first letters from wife and saw the pictures of the kids. I went to the bathroom, so my prison cell neighbour could not see my tears."

Breno also said that he saw "inmates who tried to commit suicide" which he described as the most horrible experience during his time in prison.

"They received the maximum sentence and now tried to take their own life," he said.

Breno called prison "a learning process" and said he would no longer do "anything crazy."

German newspaper Bild reports that Breno could be fully released in March or April 2014 and speculated that he could then return to his native Brazil.

It is believed he could join his former club Sao Paulo, who confirmed signing Breno until Oct. 7, 2015, in Dec. 2012, with the contract valid upon his release.